Elevator door



April 22 1924. ALSSS E. w. FENN ELEVA'IOR DOOR Filed Allg. 27 1920 (fu/y lj Il' Patented Apr. 22, 1924.

EMDR-Y W. FENN, OF CHCAGO, ILLINOXS, ASSIGNOR T THE PEELLE COMBANY, F

v BROOKLYN, NEV YORK, A. CBPRATION OF NE'W YORK.

ELEVATOR DOOR.

Application filed August 27, 1920.

To all whom t may concern.'

Be it known that I, EironY lV. FENN, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented certain new and useful Improvements in Eleva-tor Doors, ofwhich the following is a specification, reference being had therein tothe accompanying drawings, which form a part thereof.

My invention relates to elevator doors, and more particularly toelevator doors of the pass type employing two sections oppositelymovable in relation to each other and having movement in a verticalplane with a horizontal component., so that the doors at one opening ina shaft in ope-ning, will pass to a horizontal plane parallel with, andoverlap, closed doors at an adjacent opening.

Doors of the type to which my invention relates, have move-ment upon asingle rail as to all doors in a shaft, which rail has two verticalsections occupying parallel planes, the section nearer to the wall ofthe elevator shaft being located adj scentI the meeting point of thedoo-rs when closed, the other or longer section being spaced fartheraway from the wall of the shaft at the sills and lintels of the dooropenings and having a gap therethrough into which the upper or lowerguide shoes of the respective door sections may pass, and obliquesections connecting said vertical sections.

When the doors are closed, the shoes carried thereby adjacent themeeting point o-f the doors, engage a vertical section of thv railadjacent this point, and other shoes carried by the door are disengagedfrom the rail but are engaged by a. switch mechanism adapted to impartthe desired movenient thereto to cause their engagement with, o-rdisengagement from, the rail s ction more remote from the wall of theshaft with the opening or closing of the door.

This construction forms no part of my present invention, however, suchbeing made the subject matter of separate applications for LettersPatent.

The door of my invention is essentially of' what is known as thetruckable type, tmploying a truck bar of sufficient width toapproximately span the gap between the sill of the door opening and theelevator car when the door is open, the horizontal component of movementwhen opening lthe Serial No. 496,305.

door necessitating the employment of a truck bar having a section offsetwith relation tothe door and projecting towards the sill of the dooropening, so as to compensate for this horizontal component of movement.TWhile in the type of door above df'scribed the rail construction willhold the doors against the wall of the elevator shaft adjacent the dooropening when the door is open, it is desirable, and sometimes required,that the doors when in this position be held by means independent of therails. Furthermore, in this type of door, when it is open, no support isafforded the offset truck bar section intermediate the jambs of the dooropening, apart from the retaining bolts securing this section upon theframe of the door.

With these conditions in mind, I solconstruct the door that when it isin the closed position, it will be positively locked against horizontalmovement away from the wall of the shaft by means carried b-ysaid wallas distinguished from the holding means carried by the wall angle bar ofthe rail structure.A In securing this result, the locking means must beso constructedV and arranged that it will not interfere with thehorizontal component of movemnt of the doors in opening and closingsame, and will not bind in a manner to interfere with the free startingof the doors when opening same and the full closing of the doors. Thelocking means is so constructed as to co-operate with the angle barframe of the door, thus avoiding any gaps through which flame and smokemay pass from or into th shaft in the eventof fire.

The locking means carried by the wall of the shaft adjacent the sill ofthe door is also utilized as a support for the projecting section of thetruck bar when the door is open, having the two-fold eect of reinforcingsaid door against vertical stresses of loads passing thereover, and ofpreventing the force of the impacts ofthe vehicle carrying such loadsbeing transmitted to the guides or rails with a resultant possibility ofa loosening or disarrangeinent thereof or of the wall angle bar, thussupplementing the action of `the usual supporting bracket carried bysaid bar, and imparting to the device the added functional possibilityof relieving the rail from transverse or compressive stresses. By thisconstruction, l secure points of support for the door adjacent the silland adjacent the edge of the wall angle bar, thus edectively preventingsagging of the door or skewing thereof under the stresses of loadspassing thereover.

I am also enabled to use a pass type door of any desired width withoutthe necessity for increasing the bulk or strength of the rail structure,since while the door is in use, in either the opened or the closedposition, any unusual stresses thereon will be transmitted directly tothe wall of the shaft, and not be sustained by the rail structureitself.

The invention consists primarily in an elevator door embodying therein alower door section composed of an angle bar frame having the inwardlydirected flanges presented toward the wall of the shaft, an upper doorsection, a guide rail consisting of a short vertical section adjacentthe meeting point of said door sections, a long vertical sectionparallel therewith and a connecting oblique section, said long sectionbeing positioned farther from the wall of the shaft than said shortsection, whereby when opening and closing the door said lower sectionwill have vertical movement while upon said vertical ail sectionsrespectively, and a vertical movement with a horizontal component whileupon said oblique section, a fitting having a downwardly presentedtongue mounted on the wall of the shaft adjacent the sill of the dooropening, the length of said tongue being no greater than the length ofsaid short rail section below the meeting point of the door sections,and a housing carried by the panel of said door section adapted toinclose said fitting, whereby the vertical flange of the lower rail ofthe lower door section will pass between said tongue and the wall of theshaft and lock said section in relation to the wall of the shaft, whenthe door is closed; and in such other novel features of construction andcombination of parts as are hereinafter set forth and described, andmore particularly pointed out in the claims hereto appended.

Referring to the. drawings,

Fig. l is a condensed view of an elevator door embodying my invention,upon a vertical section midway between the j ambs of the door opening,the door being shown in the closed position;

Fig. 2 is a similar view with the door in the opened position;

Fig. 3 is a cross-sectional view of the door structure taken in part onthe meeting line of the door sections and in part upon a lowerhorizontal section of the lower door section; and

Fig. l is a diagrammatic view of the guide rail.

Like letters refer to like parts throughout the several views.

In the accompanying drawings, I have shown an embodiment of theinvention in ev pass type door in which bot-h of the sections have ahorizontal component of movement during a portion of the verticalmovement of the doors when opening and closing, although it is apparentthat the invention may be adapted tor a. pass type door in which one ofthe sections has only a vertical movement in a single plane.

In the drawings, I have omitted the switch mechanism operative adjacentthe sill and lintel of the door for ensuring the desired parallelmovement of the sections in their entirety when having a horizontalcomponent of movement, since this mechanism forms no part of the presentinvention.

In the embodimentofthe invention shown in the drawings, the wall of theelevator shaft is shown at. c, the lintel of a door opening therein at(1,', the sill of said opening at a2 and the side jambs of said openingat ai" and at. Secured to the wall of the shaft upon opposite sides ofeach door opening is the usual wall angle bar Z1 which may be secured inplace in any desired manner as by means of ordinary foundation bolts.

Carried by each of said wall bars is a single guide rail composed of ashort vertical section c extending adjacent the meeting point of the twodoor sections, a long vertical section c adjacent and vbelow the sill ofthe door opening, an oblique sec- .tion c2 connecting said first namedsections, a long vertical section c3 adjacent and above the lintel ofthe door opening, and an oblique sectionA c4 connecting said section c3with the short section c. The sections c and c3 have the usual gaps (Z-Ztherein for permitting the engagement and disengagement of the top orthe bottom shoe of the upper or the lower door sections respectively,with the long rail section cooperating therewith, at the limit of thehorizontal component of movement of the door sections.

Mounted upon the guide rail or track, which may be of any desiredconstruction, are two door sections c and j provided with the usualshoes (fo-operating with the guide rail or track structure, and with theswitch mechanism above referred to but not shown in the drawings. Eachof the sections: e and j is provided with a rectangular angle iro-nframe closed by means of a panel e and f', which in the form of theinvention shown is of corrugated metal, although if desired an ordinarymetal sheathed wooden panel may be used. The inwardly directed flangesof the angle bar frame of each door section are positioned on that sideof the door adjacent the wall of the sha-ft so as to permit the inwardlydirected flange of the top bar of the upper door section and thecorresponding ange of the bottom bar of the lower door section, tobeutilized as a part of the locking means to 'relieve the rail structurefrom the force of any impacts upon the door when it .is closed, whichincludes co-operating locking members secured directly to the wall ofthe shaft adjacent the lintel a and sill a2. Said door section tramesare engaged with their co-oiperating locking members only when the dooris in the closed position, it being essential to have the rail section cextend for a suficient distance upon opposite sides ot' the meeting lineof the two door sections to ensure the engagement and disengagement. ofthese locking memlbers with and from the trame ot the door in closingand opening same prior to the operative effect ot the oblique sectionsc2 and c* ot the rail in imparting a horizontal component of movement toboth sections.

rIhe locking member (To-operating with the top rail of the upper doorsect-ion consists ot a metal fitting g having an upwardly extendingtongue g spaced awa-y from the door a distance slightly greater than thethickness of the flange of the frame of the door section c with which itcol-operates. This fitting is bolted or otherwise secured to the wall otthe shaft immediately above the lintel ot the door and projects withinthe shaft toward the door to an extent which necessitates the employmentin the door section e of a vertical housing L extending between the topand bottom bars ot the trame ot said section, which. ncloses saidfitting and permits the door to come to rest in close proximity to thewall ot the shaft upon the completion of the closing movement.

Slightly below the sill a2 is a -tting z' having a downwardly projectingtongue v1 and an upwardly projecting stud 2 which terminates onsubstantially the level of the sill a2, which construction is providedbecause the lower fitting is adapted to co-op erate with the lower doorsection in a. manner to hold it against horizontal displacement when thedoor is open, as well as when it is closed. The door section f isprovided with a housing j similar to the housing 7L of the section e,which incloses the fitting z' while exposing the inwardly presentedflange ot the bottom rail of the door section so as to .permit its:entering the space between the tongue z" and the wall of the elevatorshaft.

The number ot ittings g-i will vary with the width of a door, anincrease in the number ot such ittings and housings involving a mereduplication of parts.

The housings h-j are designed primarily to attordclearance to permitmovementot the door sections in relation to the fittings f/-. but havethe incidental function o'l bracing the door intermediate the side railsthereof. lVhen metal sheathed doors are used, these bars serve asmullions to which the vertical edges of the corrugated sheets may beattached, and co-operate with the frame of Lthe door and with other suchhousings to confine the metal sheathed wooden panels, when such areused. The depth of Ithe housing is immaterial, so long as they affordthe desired clearance for said fittings when the door is approaching andhas reached the closed position.

The two door sections e and f are connected in the usual manner, thehanger bar f2 of the door section f being adapted to engage the usualstops /c carriedby the wall angle bar b to support and maintain the topbar of the door on substantially the same plane as the sill of the dooropening to facilitate the closing otthe gap between the elevator car andsaid sill when the door is open, which is a characteristic incidental toa door of the truckable type. IVith a pass type door, however, I providea supplemental truck bar section or" a width so as to pass between thedoor jambs a3 and at when the door is closed. which supplemental truckbar shown at m is in the form ot an angle iron bolted or otherwisesecured to the top bar ot the lower door section. This bar m is Ot awidth to engage and seat upon the fitting ef when the door is open, andis provided with a socket opening which preterably extends entirelytherethrough, adapted to receive the stud 2 upon said fitting, and thusco-operate with the stops 7c in sustaining the loads upon the door asvehicles pass from the floor of the building to the elevator car. andrelieving the-tracks and the wall angle bars trom at least a portion ofthe vertical strains from such moving loads. In addition to thischaracteristic, the stud 2 co-operating with said bar fm, willrhold thedoor section f against horizontal displacement under the torce ofimpacts of loads therewith and thus entirely relieve the track structurefrom stresses therefrom.

The door section e has an overhung astragel n adapted to co-operate withthe supplemental truck bar m when the door is in the closed position. At0 I have shown the usual ame angle upon the door section f.

The detailed construction of the door sections is immaterial to theinvention, which is equally applicable to corrugated metal, or

metal sheathed wooden paneled doors, the invention relating moreparticularly to those structural characteristics by which the trarne ofthe door may be utilized to form a positive lock while the door isclosed, which will serve to hold the door sections close to the wall otthe elevator shaft, and relieve the track structure trom stressesdeveloped by blows upon Vsaid door sections.

The operation of the herein described door structure is substantially asfollows iVhen a door is closed, the relation of parts will be as shownin Fig. l of the drawings. ln opening the door the track section c willlimit the movement of the door sections to a directly vertical movementfor a distance sufficient to permit the inwardly directed 'flange of thetop bar of the door section c and of the bottom bar of the door sectionf, to pass beyond the end of the tongues g and i respectively. After theflanges have cleared said tongues, a horizontal component of inovenientis introduced in the movement of the doors by the oblique sections c2and cf, said door sections as they pass onto the long sec-tions c and c3of the guide rail or track being spaced away from the wall a distancesuficient to permit them to pass a door closing an opening above andbelow the door opening closed by the door being operated.

As the doors reach the fully opened position, the truck bar section vmwill seat upon the fitting z' and thus afford a support for saidsupplemental truck bar intermediate the jambs of the door, the lateralextensions of the hanger bar f2 at the same time engaging the stops 7c,thus serving to support the door section with the upper edge or truckbar portion thereof on substantially the level of the sill 0,2. In thismanner the load upon the door will be sustained in part by the wallangle bars Zi and in part ay the fitting z' carried by the wall of theelevator shaft. The stud 2 of the fitting i, as the door comes to restwith the bar m upon said fitting, will enter the opening in said bar andthus prevent displacement of the door inwardly of the shaft when a loadis passing thereover. relieving the rail section 02 and the wall anglebar from such stresses from the load.

In closing the door, the operation will be the reverse of thatdescribed, each door section being brought upon lthe plane which itoccupies when the door is closed before the top rail of the section eand the bottom rail of the section f reaches the operative relationtothe tongues y and z" respectively.

It will be observed that the tongues g and operatively engage the dooronly when it is approaching the closed position or is in this position,lthe door automatically engaging and disengaging said tongues as aresult of the movements of the door as determined by the trackstructure.

The stops 7c and the fitting/i' will prevent the door section f fromfalling, in the event of breakage of the suspension cable connecting thetwo door sections, while the fitting g will act similarly as to the doorsection e.

The use of the fittings g and z' will relieve the guide or trackstructure upon opposite sides of the door opening from unusual stressesthereon, to an extent to avoid the necessity for employing heavy metalstock in such structures.

While the housings and j are shown as being vertical channels extendingthe entire width of each door section, it is apparent that if desiredthe recessed portion forming this housing need extend only a shortdistance from the top bar of the frame of the section e and the bottombar of the frame of the section f sufficient to afford clearance topermit horizontal movement of the door sufficient to clear the fittingsg and z'.

It is not my intention tolimit the invention to the detailedconstruction of the track structure nor of the door sections, my presentinvention relating more particularly to the means for binding bothsections with relation to the shaft when the door is closed, withthefspecific characteristic of utilizing the binder fitting adjacent thesill of the door opening as a support for the projecting truck barsection which is essential to a door of the pass type.

Having described the invention, what I claim as new and desire to haveprotected by Letters Patent, is

l. An elevator door embodying therein a lower` door section composed ofan angle bar frame having one of the sets of flanges parallel to andpresented toward the wall of the shaft, an upper door section, a guiderail consisting of a short vertical section adjacent the meeting po-intof said door sections, a long vertical section parallel therewith and aconnecting oblique section, said long section being positioned fartherfrom the wall of the shaft than said short section, whereby when openingand closing the door said lower door section will have vertical movementwhile upon said vertical rail sections respectively, and a verticalmovement with a horizontal component while upon said oblique section, afitting having a downwardly presented tongue mounted on the wail of theshaft adjacent the sill of the door opening, the length of said tonguebeing no greater than the length of said short rail section below themeeting point of the door sections, and a. housing carried by the panelof said door section adapted to inclose said fitting, whereby thevertical flange of the lower rail of the lower door section will passbetween said tongue and the wall of the shaft and lock said section inrela.- tion to the wall of the shaft, when the door is closed.

2. An eleva-tor door embodying therein a lower door section, an upperdoor section composed of an angle bar frame having one 'of the sets offlanges paralled to and presented toward the wall of the shaft, a guiderail consisting of a short vertical seclil!) lili) tion adjacent themeeting point of said door sections, a long vertical section paralleltherewith and a connecting oblique section, said long section beingpositioned farther from the wall of the shaft than said short section,whereby when opening and closing the door said upper section will havevertical movement while upon said vertical rail sections respectively,and a vertical movement with a horizontal component while upon saidoblique section, a fitting having an upwardly presented tongue mountedon -the wall of the shaft adjacent the lintel of the door opening, thelength of said tongue being no greater than the length of said shortrail section above the meeting point of the door sections, and a housingcarried by the panel of said upper door section adapted to inclose saidfitting, whereby the vertical flange of the upper rail of the upper doorsection will pass between said tongue and the wall of the shaft and locksaid section in relation to the wall of the shaft, when the door isclosed.

3. An elevator door embodying therein upper and lower door sections eachcomposed of an angle bar frame having one of the sets of lianges thereofparallel to and presented toward the wall of the shaft, a guide railconsisting of a short vertical section adjacent the meeting point ofsaid door sections, long vertical sections parallel therewith extendingadjacent and beyond the lintel and the sill of the door openingrespectively, and oblique sections connecting said vertical sectionsrespectively, said long sections being positioned farther from the wallof the shaft than said short sections, whereby when opening and closingthe doors, the sections thereof will have vertical movement while uponsaid vertical rail sections respectively, and a vertical movement with ahorizontal component while upon said oblique sections respectively, afitting having a downwardly presented tongue mounted on the wall of theshaft adjacent the sill of the door opening, a second fitting mounted onthe wall of the shaft adjacent and above the lintel of the door opening,having an upwardly presented tongue, the length of said tonguesrespectively being no greater than the distance said door sectionsrespectively travel upon said short rail section` and housings carriedbv the panels of said door sections respectively each adapted to inclosethe fitting associated with that section. whereby the vertical flange ofthe lower rail of the lower door section, and the vertical iiange of theupper rail of the upper door section, will pass between the tongue ofthe fitting associated with said section and the wall of the shaft, andlock said seotions in relation to the 'wall of the shaft, when the dooris closed.

et. An elevator door embodying therein a lower door section composed ofan angle bar frame having one of the sets of flanges paralsaidverticalrail sections respectively, and a v vertical movement with a horizontalcomponent while upon said oblique section, a fitting having a downwardlypresented tongue mounted on the wall of the shaft adjacent the sill ofthe door opening, the length of said tongue being no greater than thelength of said short rail section below the meeting point of the doorsections, and a housing consisting of a channel bar extending verticallybetween the upper and the lower bars of said frame and adapted toinclose said fitting, whereby the vertical iiange of the lower rail ofthe lower door section lwill pass between said tongue and the wall ofthe shaft and lock said section in relationto `the wall of the shaft,when the door is closed.

5. An elevator door embodying therein a lower door section, an upperdoor section composed of an angle bar frame having one of the setsofflanges parallel to and presented toward the wall or the shaft, a guiderail consisting of a short vertical section adjacent the meeting pointof said door sections, a long vertical section parallel therewith and aconnecting oblique section, said long section being positioned fartherfrom the wall of the shaft than said short section, 'whereby whenopening and closing the door said upper section will have verticalmovement while upon said vertical rail sections respectively, and avertical movement with a horizontal component while upon said obliquesection, a fitting having an upwardly presented tongue mounted on thewall of the shaft adjacent the lintel of the door opening, the length ofsaid tongue being no greater than the length of said short rail sectionabove thc meeting point of the door sections, and a housing consistingof a channel bar extending vertically between the upper and the lowerbars of said frame and adapted to inclose said fitting, whereby thevertical flange of the upper rail of the upper door section will passbetween said tongue and the wall of the shaft and lock said section inrelation to the wall of the shaft, when the door is closed. i 1

6. An elevator door embodying therein upper and lower door sections eachcomposed toward the wall of the shaft, a guide railr consisting of ashort vertical section adjacent the meeting point of said door sections,long vertical sections parallel therewith extending adjacent and beyondthe lintel and the sill of the door opening respectively, and obliquesections connecting said vertical sections respectively, said longsections being positioned farther from the wall of the shaft than saidshort sections, whereby when opening and closing the doors, the sectionsthereof will have vertical movement while upon said vertical railsections respectively, and a vertical movement with a horizontalcomponent while upon said oblique sectionsrespectively, a fitting havinga downwardly *presented tongue mounted on the wall of the shaft adjacentthe sill of the door opening, a second fitting mounted on the wall ofthe shaft adjacent and above the lintel of the door opening, having anupwardly presented tongue, the length of said tongues respectively beingno greater than the distance said door sections respectively travel uponsaid short rail section, and housings consisting of channel barsextending between the upper and the lower bars of said sectionsrespectively and each adapted to inclose the fitting associated withthat section. whereby the vertical flange of the lower rail of the lowerdoor section` and the vertical flange of the upper rail of the upperdoor section, will pass between the tongue of the fitting associatedwith said sec-- tion and the wall of the shaft. and locl said sectionsin relation to the wall of theA shaft, when the door is closed.

7. An elevator door embodying therein a lower door section composed ofan angle bar frame having one of the sets of flanges parallel to andpresented toward the wall of the shaft, a supplemental truck bar carriedby and extending substantially flush with the top of the upper bar ofsaid door section and normally projecting between the j ambs of the dooropening, said truck bar being of a width to span the gap between saidupper bar and the sill of the door when the door is open, and having anopening therein, an upper door section, a guide rail consisting of ashort vertical section adjacent the meeting point of said door sections,a long vertical section parallel therewith and a connecting obliquesection, said long section being positioned farther from the wall of theshaft than said short section, whereby when opening and closing the doorsaid lower section will have vertical movement while upon said verticalrail sections respectively, and a vertical movement with a horizontalcomponent while upon said oblique section, a fitting having a downwardlypresented tongue mounted on the wall of the shaft adjacent the sill ofthe door opening, the length of said tongue being no greater than thelength of said short rail section below the meeting point of the doorsections, and an upwardly projecting stud adapted to enter the openingin said supplemental truclr bar, and a housing carried by the panel ofsaid door section adapted to in close said fitting, whereby the verticalflange of the lower rail of the lower door section will pass betweensaid tongue and the wall of the shaft and lock said section in relationto the wall of the shaft, when the door is closed.

8. An elevator door embodying therein a lower door section composed ofan angle bar frame having one of the sets of flanges parallel to andpresented toward the wall of theshaft, a supplemental truck bar carriedby and extending substantially flush with the top of the upper bar ofsaid door section and normally projecting between the jambs of the dooropening, said truck har being of a width to span the gap between saidupper bar and the sill of the door when the door is open, and having anopening therein, an upper door section, an offset astragal carried bythe lower bar of the frame of said upper door section adapted to inclosesaid supplemental truck bar when the door is closed, a guide railconsisting of a short vertical section adjacent the meeting point ofsaid door sections, a long vertical section parallel therewith and aconnecting oblique section, said long section being positioned fartherfrom the wall of the shaft than said short section, whereby when openingand closing the door said lower door section will have vertical movementwhile upon said vertical rail sections respectively7 and a verticalmovement with a horizontal component while upon said oblique section, afitting having a downwardly presented tongue mounted on the wall of theshaft adjacent the sill of the door opening, the

length of said tongue being no greater than 1 the length of said shortrail section below the meeting point ofthe door section, and an upwardlyprojecting stud adapted to enter the opening in said supplemental truckbar, and a housing carried by the panel of said door section adapted toinclose said fitting, whereby the vertical flange of the lower rail ofthe lower door section will pass between said tongue and the wall of theshaft and lock said section in relation to the wall of the shaft, whenthe door is closed.

9. An elevator door embodying therein a lower door section. a. guiderail adapted to impart a horizontal component of movement to said lowerdoor section during a portion of its opening or closing movement,whereby said section will be spaced away from thc wall of the shaft whenthe door is open and will be closely adjacent said shaft when the dooris closed, a supplemental truck bar carried by said door section adaptedwhen the door is open to span the gap between saine and the sill of thedoor opening, and means carried by the wall of the shaft adjacent thesill of the door opening adapted to engage said truck bar when the dooris open, and transmit vertical and horizontal stresses thereon to thewall of the shaft.

10. An elevator door embodying therein a lower door section `composed ofan angle bar frame having one of the sets of flanges parallel to andpresented toward the wall of the shaft, an upper door section, a guiderail consisting of a short vertical section adjacent the meeting pointof said door sections, a long vertical section parallelvtherewith and aconnecting oblique section, said long section being positioned fartherfrom the wall of the shaft than said short section, whereby when openingand closing the door said lower section will have vertical movementwhile upon said vertical rail sections respectively, and a verticalmo-vement with a horizontal component while upon said oblique section,and co-operating means carried by the wall of a shaft adjacent the sillof the door opening and by said lower door section, whereby saidco-operating means will operatively engage each other upon thecompletion of the closing movement of the door and lock said section inrelation to the wall of the shaft.

1l. An elevator door embodying therein a lower door section composed ofan angle bar frame having one of the sets of flanges parallel to andpresented toward the wall of the shaft, an upper door section, a guiderail consisting of a short lvertical section adjacent the meeting pointof said door sections, long vertical sections parallel therewith andconnecting oblique sections, said long sections being positioned fartherfrom the wall of the shaft than said short section, whereby when openingand closing the door said door sections will have vertical movementwhile upon said vertical rail sections respectively, and a verticalmovement with a horizontal component while upon said oblique section,co-operating means carried by the w-all of a shaft adjacent the sill ofthe door opening and by said lower door section, whereby saidoo-operating means will operatively engage each other upon thecompletion of the closing movement of the door and lock said section inrelation to the wall 'of the shaft, and co-operating means carried bythe wall of a shaft adjacent the lintel of .the door opening, and saidupper door section, whereby said (zo-operating means will operativelyengage each other upon the completion of the closing movement of thedoor and lock said upper section in relation to the wall of the shaft.

In witness whereof I have hereunto aiiXed my signature, in the presenceof two subscribing witnesses, this 29 day of July, 1920.

EMORY W. FENN. Witnesses F. W. SKEDD, A. H. KLEIN.

